JPS62191232A - Device for operating gear change for cultivator - Google Patents

Abstract

PURPOSE:To enable the rotation of a cultivating device in both normal and reverse directions, simplify a cultivating operation mechanism, and eliminate an erroneous operation by operating a change lever from the operating gear position of a traveling gear stroke to a cultivation changeover stroke at the time of cultivating operation by means of a cultivating device. CONSTITUTION:A traveling gear stroke 3 is provided on a change lever 2 for changing the traveling speed of a body to an operating speed suited to a cultivating operation and to a road traveling speed which is higher than said operating speed. Further, a cultivation changeover stroke 5 which can change the rotation of a cultivating device both in normal and reverse directions by the operation of the change lever 2 is also provided. The change lever 2 can be changed from the operating gear position 6 of the traveling gear stroke 3 to a cultivation changeover stroke 5 for a cultivating operation. By this structure, a power- transmitted rotation of the cultivating device at the time of high speed operation can be prevented enabling a safe cultivation, while eliminating pulling interlocking mechanism as was required in the conventional device, to simplify an operating mechanism while eliminating an erroneous operation.

Description

[Detailed description of the invention] Industrial applications Is this invention a variable speed operation for tillers? Regarding placement.

When traveling at high speeds such as the road speed of conventional technology tillers,
In conjunction with this speed change operation to the road running speed, a check mechanism is provided to stop the rotational transmission of the tilling device.

Problems to be Solved by the Invention In the above-mentioned speed change operation mode of the tiller, the rotational transmission of the tiller is stopped by the speed change operation to the road running speed.

Because a special checking mechanism is provided for this purpose, the mechanism is complicated and operation tangles are likely to occur.

Means for Solving the Problems This invention provides a speed change stroke of a speed change lever (2) for switching the speed of the vehicle body (1) between a working speed adapted to plowing work and a road speed higher than this working speed. (3) is provided, and a tilling switching stroke (5) is provided in which the tilling device (4) is switched between forward rotation and reverse rotation by operating the speed change lever (2), and the working speed position ( In 6), the speed change operating device for a tiller is configured such that the speed change lever (2) can be operated to perform tilling in the tilling switching stroke (5).

Operation of the Invention By operating the gear shift lever (2) during the traveling gear shift stroke (3), the vehicle body (1) can be shifted to a working speed or to a high road speed position. be able to. When performing tillage work using the tillage device (4), operate the speed change lever (2) from the work distal Et (6) of the traveling speed change stroke (3) to the tillage switching stroke (5),
Select forward or reverse rotation. Thereby, the tilling device (4) can be rotated in either forward or reverse directions.

Effects of the Invention As described above, although the gear shift lever (2) is in the form of a single operation lever, when only traveling without tilling, it is only necessary to operate it during the traveling gear shift stroke (3). When plowing is performed in step 4), it must be operated from the working speed position (6) of this traveling gear shift stroke (3), so the tilling bag and (4) must be operated at high speeds such as on-road speeds. Since it is not rotated, plowing can be done safely. Moreover, since the speed change lever (2) is operated at the working speed position (6) for the tilling changeover stroke (5), the conventional checking and interlocking mechanism is not required, the operation mechanism can be simplified, and erroneous operation can be prevented. No need to worry.

Invention of Embodiments The traveling gear shift stroke (
3) working speed position (6) of the travel gear change groove (7) and the neutral position 22 of the tillage switching groove (8) along the tillage switching stroke (5)
(9) are communicated with each other through a tillage operation groove (10).

In such a configuration, the speed change lever (2) communicates the travel speed change groove (7) and the tillage switching groove (8) only at the tilling operation groove (10) position, thereby changing the working speed position (
6) Tillage switching from a shift position such as a road running speed position etc.
Pt (8) is not operated, and the tillage switching groove (
8) and the tilling operation groove (10) is located at the neutral position (9).
), even if the speed change lever (2) is operated to the tillage switching groove (8), the tillage transmission state does not immediately occur, and the operation is safe and easy. In addition, the operation of the tillage cutting M-mechanism (8) to the neutral position (9) is performed from the working speed position (6), but the operation between the travel gear change groove (7) and the tillage operation groove (10) is performed from the working speed position (6).
) is communicated with the working speed position (6), so the gear shift lever (2) can be accurately guided and the configuration is simple.

In addition, the traveling speed change stroke (3) moves from the working speed position (6) to the neutral position (11) on one side to the road traveling distal i! 1
(12) is provided, and a reverse position ff1 (14) is provided on the other side via the neutral position (13), and the tilling ticket stroke (5)
is configured such that a forward rotation position (15) is provided on one side of the neutral position (9), and a reverse rotation position (16) is provided on the other side.

In such a configuration, the gear shift lever (2) is operated from the working speed position (6) in the traveling gear shift stroke (3) to the road traveling speed position (12) via the neutral position (11) on one side. , and through the neutral position ff1 (13) on the other side, the backward position i! ! (14
). Furthermore, the tillage switching stroke of the gear shift lever (2) (
In the operation in step 5), the tilling transmission is operated from the zero neutral position (9) to the forward rotation position (15) on one side to rotate the tilling device (4) in the forward direction for tilling, and the other side to the reverse rotation position (15). Rotation position ff1 (16
) to rotate the tilling device (4) in the opposite direction to till the soil. Therefore, even though the speed change lever (2) is operated from the working position (6) to the tillage switching groove (8), it changes from the working speed position (6) to the far road position (12) and the reverse position ff1. (+4), as well as the forward rotation position (15) and reverse rotation position (16), there are neutral positions (11), (13), and (9) for safety. You can perform various operations.

Further, a tilling operation interlocking mechanism (5) is operated by the speed change lever (2) to switch between forward and reverse rotation transmission of the tilling device (4).
0) and a traveling operation interlocking mechanism (49) that changes the traveling speed.
) is provided with a working speed fixing device (52) that maintains the engaged transmission state of the traveling transmission gear (51) operated at the working speed position (6) and prevents it from becoming disengaged.

In the case of such a configuration, the shift lever (2) is set to the working speed position (6) of the traveling shift stroke (3), and then the forward rotation position m (15) of the tilling switching stroke (5) or the reverse rotation position is set. rank ii
! 1 (16), the traveling transmission gear (51) is temporarily removed from the operating position by the traveling operation interlocking mechanism (19), and the tilling device (4) is operated by the tilling operation interlocking mechanism (50).
By switching the transmission mechanism on the side, forward rotation position 1 (15)
, or reverse rotation position and the transmission of (16) is performed. The working remote position of the transmission gear (51) in such a state (
6) is maintained by a working speed fixing device (52),
The engaged transmission state can be maintained, the transmission gear (51) can be prevented from being pulled out, and accurate transmission can be performed by operating a single transmission lever (2).

Further, a travel operation interlocking mechanism (4) is rotated along the travel shift groove (7) by engagement by the speed change lever (2).
The rotary arm (27) of 9) is provided with a traveling operation fixing device (44) that fixes the rotating arm (27) by operating the shift lever (2) from the working speed position (6) to the tilling operation groove (10). .

In such a configuration, the speed change lever (2) moves from the working speed position (6) of the traveling speed change groove (7) to the tilling operation groove (10).
The traveling operation interlocking mechanism (49)
It is temporarily removed from the rotating arm (27). However, the rotating arm (27) in this working speed position (6) is fixed by the traveling operation fixed mold 21 (44). For this purpose, the traveling operation interlocking mechanism (4) including this rotating arm (27) is
9), maintain the working speed transmission state position of the meshing of the traveling transmission gear. Therefore, the shift lever (2) is moved to the tilling operation groove (lO
) to return to the traveling gear shift groove (7), shift lever (2)
can be precisely engaged with the pivoting arm (27) on the working distal shaft (6).

Embodiment In the illustrated example, the vehicle body (1) has a transmission case (17
) and a handle frame (18) that protrudes rearward and laterally at its upper end.

This transmission case (17) is formed in a square shape when viewed from the side, and is provided with an axle (20) having wheels (19) at the front lower end, and a tilling shaft (20) having tilling claws (21) at the rear lower end. 22). These axles (2
A transmission mechanism is provided for transmitting power to the tiller 0), the tilling shaft (22), and the like.

Inside the handle frame (18) are shifter arms (23) (24) that operate the transmission mechanism, and these shifter arms (23) (24) are controlled by the gear lever (2) at the rear end.
23) An interlocking mechanism etc. to operate (24) is provided. Handle frame (18) rear end placket) (25
) is provided with a pair of upper and lower rotating arms (27) (2B) that can freely rotate in the left and right directions around the bottle (2B). The rear ends of the rotating arms (27) and (28) are provided with notches (29) and (30) into which the speed change lever (2) can fit. The base of the gearshift A-(2) is rotatable around the pin (26) and also around a pin (31) perpendicular to this pin (2B) in the left and right direction, so that it can be freely rotated up, down, left and right. Zero rotation arm (2?) (2B) that can be rotated in any direction
The arm (32) (
33) and are connected by rods (34) and (35).

(3B) (37) is the shifter arm (23) (2
4), which is rotatable with respect to the upper end of the transmission case (17).

The operation panel (
38), and the operation panel (38) is provided with a traveling gear change groove (7) and a tillage switching groove (8) that guide the operation lever (2).
, and a tilling operation groove (10). Traveling gear shift 111
1 (7) is placed on the lower side, and the tilling switching groove (8) is placed on the upper side, and the tilling operation groove (lO) is placed in the left and right center portions to communicate vertically.
is formed.

In addition, these travel gear change grooves (7) and tillage switching grooves (8) are
The tilling operation groove (10) may be provided on opposite sides vertically, or may be arranged so that the groove direction is along the vertical direction so as to be located in the left-right direction.In this case, the tilling operation groove (10) will be in a state of being 8) in the left-right direction.

The working speed fixing bag m (52) that prevents the speed change gear at the working speed position (6) from coming off is as follows.

Above the transmission case (17) is the arm (32).
(33) Place the locking arm (38) on the upper pin (39) in the middle of these arms (32) and (33).
). This lock arm (38)
A cam (40) is provided on the arm (33) of the arm (33).
33) to the neutral position (9), this lock arm (3B) is moved by a spring (41) to this arm (33).
Install and rotate it to the side. At the same time, the spring (
41) and pushes the lock arm (38) upward). A notch (42) that can fit into the arm (32) is provided at the other end of the lock arm (38), and by fitting this notch (42) into the arm (32),
Rotation of the arm (32) is disabled. This notch (
The fixing position of the arm (32), which is fitted and fixed by 42), is set to the working speed position (6).

A rotating arm (27) operated by a gear shift lever (2)
) to the working speed position (6).
44) is as follows. (bracket) (
25) is provided with a lock pin (45) that can freely slide in parallel with the pin (26), and this lock pin (45) is pressed against the spring (47) by the protrusion (4B) of the gear shift lever (2). It is configured to do this. Opposed to the lower end of the lock pin (45), a lock hole (49) at the base of a rotation arm (27) that operates and interlocks the traveling speed change is set as a rotation zone.

When the gear shift lever (2) is guided to the tilling operation W (10) and the tilling switching groove (8), the rotating arm (27) is at the working speed position (6), and the lock pin (45) is in the lock hole. (49), and this rotating arm (27) cannot be moved from the working speed position (6) to any other position.

A belt transmission configuration is used in which important transmission can be performed using a clutch between the prime mover (53) mounted on the front part of the vehicle body (1) and the input shaft (50) of the transmission case (17). A traveling transmission gear (51) operated by a shifter (84) provided by the shifter arm (23) is provided on the clutch shaft (55) to be slidably moved in the axial direction.

Around the clutch shaft (55), an intermediate shaft (5B), (
57), and a traveling transmission shaft (58). By operating the traveling transmission gear (51) on the clutch shaft (55) in the axial direction, it engages with the working speed gear (59) of the intermediate shaft (56) at the center position, and the intermediate shaft (57) Through,
The traveling transmission shaft (58) is provided to transmit rotation at a relatively low speed. In addition, at the position where this transmission gear (51) is moved to this one side distal to this work, it meshes with the transmission transmission gear (60) of the traveling transmission shaft (58), and the traveling transmission shaft (58)
) are provided in a relationship that allows rotational transmission at a relatively high speed. Further, at the position where the operation is performed to move to the other side of the working speed position, the transmission gear (51) meshes with the gear (61) of the intermediate shaft (57) to reversely rotate the traveling transmission shaft (5B). It is configured to transmit power to the vehicle in the reverse direction. A chain is provided between the traveling transmission shaft (58) and the axle (20) for transmission of the chain.

The tillage switching gear (63) of the tillage transmission shaft (62) is connected to the gear (59) of the intermediate shaft (56) and the gear (57) of the intermediate shaft (57).
81), and the transmission is configured to rotate in forward and reverse directions. When this switching gear (83) meshes with the gear (59), the tilling shaft (22) is in a reverse rotation state, and the soil surface is tilled so as to be rounded up from the lower side to the upper side. Also, when the switching gear (B3) engages the gear (61) by +41, the tilling shaft (
22) is transmission of forward rotation.

A tillage switching gear (63) is provided on the tillage transmission shaft (62) so as to be slidable in the axial direction. This switching gear (83) is
It is operated by a shifter (65) by said shifter arm (24). A tilling clutch (66) is provided on the tilling transmission shaft (82) to transmit the tilling shaft (22) provided with the tilling claws (21) to transmit the chain.

When operating the gear shift lever (2) during the travel gear shift stroke (3), it is only necessary to move it in the left and right direction along the travel gear shift mechanism (7).
), it is engaged with the notch (29) of the rotating arm (27). The lock pin (45) is in a position pushed up by the spring (47) and is out of the long hole (49) of the single rotation arm (27). Further, the tilling 9J change gear (63) is in the neutral position, and the notch (42) of the arm (33) is separated from the arm (32) side due to the relationship with the cam (40) of the lock arm (38). has been done. Traveling transmission gear (51) operated by shifter (84)
) is meshed with a working speed gear (59) on the intermediate shaft (56) to transmit rotation of the axle (20) at a speed suitable for tilling work.

Such work distal f! (6) to the high-speed traveling distal ff1 (12) such as when traveling on the road, the traveling speed gear (51) is shifted to the neutral position (1υ), and the traveling speed gear (51) is shifted to the working speed gear (59). ) and becomes a non-transmission state.The shift lever (2) is disengaged from the traveling distal I
When operated at t(12), the speed change gear (51) meshes with the speed change travel gear (80) to transmit power to the axle (20) at high speed.

Also, to drive backwards, move the gear shift lever (2) to the neutral position (
13) to the reverse position (14), the transmission gear (51) is operated to the working speed gear (58) in the neutral position (13).
, and in the reverse position ff1 (14), the reverse gear (61)
It meshes with.

When cultivating with the cultivating equipment (4), shift the gear lever (
2) is operated from the working speed position (6) to the tilling switching stroke (5), so the traveling speed is in a relatively low traveling state.

Move the gear shift lever (2) from the working speed position (6) to the tilling operation groove (
10) to position it at the neutral position (9). At this time, the gear shift lever (2) is moved to the notch (28) of the rotating arm (27).
) and engages with the notch (30) of the rotating arm (28) of the tilling operation interlocking mechanism (50). This gear lever (
2), the lock pin (45) is pushed down and engaged with the lock hole (4B) of the rotating arm (27), thereby fixing the rotating arm (27) at the working speed position (6). . Further, in this neutral position state, the lock arm (38)
is located at the position where it is detached from the arm (32) on the traveling transmission side.

Move the gear shift lever (2) to the forward rotation position (1) of the tillage switching groove (8).
5), the tilling switching gear (63) changes to the gear (
81) to rotate the tilling shaft (22) in the forward direction.

When the tilling shaft (22) rotates in the forward direction, the soil tilled by the tilling claws (21) is relatively rough. Such a forward rotation position (1
5), the cam (40) part is pushed up by the arm (33), and the lock arm (38) is in the notch part (42).
) to the arm (32) on the other side, and
32) around the shaft (3B) to prevent the travel gear (51) from disengaging from the working speed gear (59).

Also, when operating the speed change lever (2) to the reverse rotation position (16), turn the tilling shaft (2) at the neutral position (9) halfway through.
After turning off the power transmission to 2), the tillage switching gear (8
3) is connected to the gear (59) to transmit reverse rotation of the tilling shaft (22). The tilling claws (21) rotate in the opposite direction to till the tilled soil into a finely pulverized state. At this time, the lock arm (38) fits the notch (42) into the arm (32), and connects the travel gear (the figure shows one embodiment of the present invention, and FIG. Fig. 2 is an enlarged side sectional view of a part of it, Fig. 3 is an enlarged side sectional view of a part of it, Fig. 4 is a plan view of a part of it, and Fig. 5 is a side view of the transmission mechanism. figure,
FIG. 6 is a plan view thereof, and FIG. 7 is a side view thereof.

In the diagram, code (1) is the vehicle body, (2) is the gear shift lever, and (3)
is the traveling gear shift stroke, (4) is the tilling device, (5) is the tilling switching stroke, (6) is the working speed position, (7) is the traveling gear groove, (8
) is the tillage switching groove, (9) is the application position, (10) is the tillage operation groove, (11) is the neutral position, (12) is the road speed position, (13) is the neutral position, (10 is the reverse position, (15
) is the forward rotation position, (16) is the reverse rotation position, (27) is the rotating arm, (40 is the travel operation fixing device, and (49) is the travel operation interlocking mechanism.

(50) shows the tilling operation link gha structure, (51) shows the traveling transmission gear, and (52) shows the working speed fixing device.

Claims (1)

[Scope of Claims] 1. A traveling speed change stroke (3) of a speed change lever (2) is provided for switching the traveling speed of the vehicle body (1) between a working speed adapted to plowing work and a road traveling speed higher than this working speed. , a tilling switching stroke (5) is provided in which the tilling device (4) is switched between forward rotation and reverse rotation by operating the speed change lever (2), and at the working speed position (6) of this travel shifting stroke (3), the tilling device (4) is switched between forward rotation and reverse rotation. A speed change operation device for a tiller, which is provided with a speed change lever (2) so as to be operable to perform tilling in the tillage switching stroke (5). 2 The working speed position (6) of the travel gear shift groove (7) along the travel gear shift stroke (3) so as to guide the gear shift lever (2), and the working speed position (6) of the travel gear change groove (7) along the tillage switch stroke (5). The speed change operating device for a tiller according to claim 1, which communicates with the neutral position (9) through a tilling operating groove (10). 3 The above-mentioned traveling speed change stroke (3) shifts from the working speed position (6) to the road traveling speed position (1) via the neutral position (11) on one side.
2), a reverse position (14) is provided on the other side via the neutral position (13), and the tilling switching process (5) is a forward rotation position (15) on one side from the neutral position (9). 2. A speed change operating device for a tiller according to claim 1 or 2, further comprising a reverse rotation position (16) on the other side. 4 A tilling operation interlocking mechanism (5) that operates switching between forward and reverse rotation transmission of the tilling device (4) by the speed change lever (2).
0) and a traveling operation interlocking mechanism (49) that changes the traveling speed.
) is provided with a working speed fixing device (52) for maintaining the meshing transmission state of the traveling transmission gear (51) operated at the working speed position (6) to prevent disengagement. The speed change operating device for a tiller according to item 1, item 2, or item 3. 5 A travel operation interlocking mechanism (4) that is rotated along the travel shift groove (7) by engagement by the speed change lever (2).
9) is provided with a traveling operation fixing device (44) that fixes the rotating arm (27) by operating the speed change lever (2) from the working speed position (6) to the tilling operation groove (10). A speed change operation device for a tiller according to claim 1, 2, 3, or 4.